Mathematics · Probability and Statistics
Let X1, X2, X3 be a random sample of size 3 from an absolutely continuous distribution that is symmetric about 0. For i = 1, 2, 3, let Ri denote the rank of |Xi| among |X1|, |X2|, and |X3|. If T+ = ∑i=1, Xi>03 Ri is the Wilcoxon signed-rank statistic, then which of the following statements is true?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1P(T+ > 4) = 18✓
- 2P(T+ > 3) = 58
- 3Var(T+) = 72
- 4P(T+ = 3) = 14
Correct answer
P(T+ > 4) = 18
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